Beginning to question my sanity - or more precisely - calc routines 🤔I'm getting 85 Deg NE azimuth from Cape if going to lunar orbit plane. But seems high value as that would mean " flying" up close to the eastern states?First stage fairly certain would impact Atlantic ocean . Also could be done as taking 2nd stage to orbit.Any one else had a crack at it?Of course different scenario if going to take option of doing plane change later in mission?
A more reasonable scenario on this first launch would be have good tracking/telemetry coverage during ascent to orbit - which is better provided along the eastern flight paths and azimuths.
JimThnxs for TDRS info.Do you know - being so close to launch campaign 🤠 what flight azimuth is after liftoff ?Also if TLI will be over Pacific which I'm assuming as it's a daylight launch?Appreciated if you do 🚀Will you be attending launch or will you be gator hunting 😅PhillUK
Happening now: NASA is discussing the launch of one of the first Commercial Lunar Payload Services (CLPS) to the Moon: Peregrine-1 with @astrobotic.Launch aboard a @ulalaunch Vulcan rocket is NET Dec. 24.Follow along for updates. 🧵1/n2/ Here are the participants in today's teleconference: Joel Kearns, deputy associate administrator for Exploration, Science Mission Directorate,NASA Headquarters in Washington Ryan Watkins, program scientist, Exploration Science Strategy and Integration Office,NASA Headquarters Chris Culbert, project manager, CLPS, NASA's Johnson Space Center in Houston John Thornton, CEO, Astrobotic, Pittsburgh3/ Kearns notes the CLPS mission uses fixed-price service contracts as opposed to traditional spacecraft development contracts.Points to CLPS progress in helping spur development of 5 different landers.Quotes @Dr_ThomasZ saying each landing attempt is like a shot on goal.4/ 5 NASA-sponsored payloads (first four pictured):Laser Retroreflector Array (LRA)Linear Energy Transfer Spectrometer (LETS)Near InfraRed Volatiles Spectrometer System (NIRVSS)Neutron Spectrometer System (NSS)Peregrine Ion-Trap Mass Spectrometer (PITMS)5/ Culbert notes that to date, no private company has successfully landed on the Moon."NASA leadership is aware of the risks and has accepted that some of these missions may not succeed. But even if landing isn't successful, CLPS has already had an impact."6/ Thornton describes this moment as "awe inspiring and humbling."They began booking customers back in 2014. There are 20 payloads onboard this first mission, with seven national represented.He says landing is Jan. 25, assuming launch on Dec. 24.7/ Thornton, discussing the challenge of launching to the Moon and launching on a new rocket, points to ULA's "stellar" track record for their confidence on their ticket to ride.8/ Asked about lessons learned regarding integrating science payloads for future lander missions, Thornton says "We've learned a ton with just the progression of mission one to mission two.""Every time we attempt one of these, we're going to get smarter and smarter."9/ Culbert says they've learned about supply chains and company resiliency.He says the important lessons on the CLPS side has been defining requirements and the process in the contract side of things.10/ Regarding launch windows, Thornton says they will launch into a trans-lunar injection to intersect with the Moon's orbit.Once they get to the Moon in a few days, they will go from a high orbit then to a medium orbit and then descend to the lowest orbit before landing.11/ Thornton says they don't think about competitors much, but wants to see a robust lunar economy for success across the board.He says they expect to operate for 10 Earth days, but w/ a "lunar night" of about two weeks after, they likely won't be able to restart the lander.12/ Thornton says they have a plate heading to the Moon with all the Astrobotic employees' signatures on it.They also held a contest for a token from Pittsburgh to head up as well. They're sending up a token from Kennywood, a Pennsylvania them park.13/ The name "Peregrine" was chosen for the lander because it's the name of the fastest flying bird on Earth.14/ If launching on Dec. 24, 25 or 26, Thornton says landing would be on Jan. 25 in order to land at the most successful time for all the payloads.15/ Thornton says because @ispace_inc was transparent with what went wrong with their mission, Astrobotic was able to take some lessons."Collectively as a species, the more we go after the Moon with more launches, the smarter we will get."16/ In response to our question, Culbert says NASA worked with Astrobotic to de-manifest several payloads in order to launch as soon as possible.He says the five that were removed from the flight (below) will fly on future CLPS flights.17/ Regarding those payloads pulled from this flight, Watkins says the original landing sight chosen didn't have quite as high of a scientific return.She reiterates that all the removed payloads will fly on future flights and so no science is being lost, just delayed.18/18 Thornton says "we just can't share" the January launch dates, but says "we know what they are."He says the Peregrine lander will take about 12 days to reach lunar orbit.This wraps up the briefing. Read more about the mission here:
@torybruno Are there any updates of Vulcan Centaur WDR?
On track. Soon. When the final coordination on the date is set, well announce
I just reworked my numbers for launch azimuth now know inclination usinglog sin Az = log cos 30.07 - log cos 28.6 and works out to 90 Deg.😅 as per ULA image above.Phill
Thanks all for chasing the VC launch azimuth question.I read somewhere that Centaur will communicate through TDRS at least part of the time. Can that happen when Centaur is beyond geostationary orbit?